1. The problem statement, all variables and given/known data Leonard wants to know how fast he can throw a ball, so he hangs a 2.3 kg target on a rope from a tree. He picks up a 0.5 kg ball of clay and throws it horizontally against the target. The clay sticks to the target and the clay and the target swing up to a height of 1.5m above the initial position. How fast did Leonard throw the ball of clay? 2. Relevant equations KE+PE = KE+PE 3. The attempt at a solution I drew it out and thought this equation might work, but i don't think it's right for many reasons. 1/2*.5kg*v^(2)=2.8kg*9.8*1.5m v=12.8 m/s unrealistically high velocity. There's no way for me to check this answer, so can someone tell me if this is right?